大型-超大型矿床找矿新认知  

New recognized intellect for prospecting large-superlarge mineral deposits

作　　者：裴荣富[1] 梅燕雄[1] 瞿泓滢[1] 王浩琳[1] 

机构地区：[1]中国地质科学院矿产资源研究所国土资源部成矿作用与资源评价重点实验室,北京100037

出　　处：《矿床地质》2013年第4期661-664,I0001,665-671,共12页Mineral Deposits

基　　金：国土资源部专项研究计划资助

摘　　要：笔者等根据全球6大洲、121个国家(地区)、22个矿种、1285个矿床的储量数据,进行了储量量变线性回归方程趋势分析。根据回归方程不同系数切割的量变界线,划分出了36个特(超)大型矿床(顶峰矿)、95个超大型矿床和314个大型矿床。据此,笔者等创新地提出了按不同储量量级划分大型-超大型矿床的新认知,继而将3类不同量级的445个大型-超大型矿床投影在1:2500万全球构造背景图上,并划分出4大成矿域、21个巨型成矿带(区)。其全球成矿规律是:内生、外生、变质和后成矿床的全球成矿统一性;不同成矿区带成矿的专属性;Cu、Au、Fe、Ag、Cr、Mn、Zn、Pb、Sb、Hg不同成矿金属,大陆边缘和板块汇聚带以及陆内构造-岩浆杂岩带和大型剪切带的成矿偏在性;特(超)大型矿床太古代-古元古代全球氧大气变态(过氧事件)、元古代-古生代全球还原大气变态(缺氧事件)和中-新生代构造圈热侵蚀(巨量构造-岩浆事件)的成矿异常性。Based on the database of 1285 mineral deposits constituting 22 commodities in 121 countries （areas） from 6 continents in the world, the authors used the linear trend analysis for their reserves to determine the cut-off lim- ited order d reserves. As a result, 36 exceptional superlarge deposits （peak mineral deposits）, 95 superlarge de- posits and 314 large deposits were selected as new cognition for their quantitative change. The authors projected over 445 large-superlarge deposits on the （1 ： 25 M） global tectonic background map and assigned them to 4 met- allogenic domains and 21 metallogenic belts. Global metallogeny of large-superlarge deposits includes unity of en- dogenic, exogenic metamorphic and epigenetic ore-forming processes in origin; speciality of different metallo- genic domains and belts; preferentiality of ore-forming elements of Cu, Au, Fe, Ag, Cr, Mn, Zn, Pb, Sb, Hg to continental margins or plate convergent belts, intra-continental tectono-magmatic complex belts and large duc- tile shear zones; abnormality of the global oxyatmversion （oxygen-excessing atmospheric event） in Archean-early Proterozoic, redoxyatmversion （oxygen- lacking atmospheric event） in Proterozoic-Paleozoic, and tectonosphere thermal erosion （great amounts of tectonic magmatic event） in Mesozoic-Cenozoic.

关 键 词：地质学 新认知 大型-超大型矿床 成矿统一性 专属性 偏在性 异常性 

分 类 号：P617[天文地球—矿床学]